66655010 has 16 divisors (see below), whose sum is σ = 120078072. Its totient is φ = 26640000.

The previous prime is 66654953. The next prime is 66655049. The reversal of 66655010 is 1055666.

66655010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37613689 + 29041321 = 6133^2 + 5389^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16160 + ... + 19860.

Almost surely, 2^66655010 is an apocalyptic number.

66655010 is a deficient number, since it is larger than the sum of its proper divisors (53423062).

66655010 is a wasteful number, since it uses less digits than its factorization.

66655010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5509.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 66655010 is about 8164.2519559357. The cubic root of 66655010 is about 405.4564989269.

The spelling of 66655010 in words is "sixty-six million, six hundred fifty-five thousand, ten".